Centrifugal filter.



No. 827,263. PATENTED JULY 31,1906. T. s. PATTERSON,

- GENTRIPUGAL'FILTER,

APPLICATION FILED APR.18,1905.

WITNESSES:

vmrog ATTORNEY r s'rnfrns reruns THOMAS S. PATTERSON, OF NEW YGRK, N. Y.I

GENTREFUGAL. auras.

Specification of Letters Patent.

ate2iteh July 31,1906.

Application filed April 18, 1905. epial ll'o. 256,193.

To all whomit may concerm- Be it lmown that l, THOMAS S. PATTERSON,

of the city, county, and State of New York,

have invented anew and'lm roved Centrifugal Filter, of which the folowing is a full,

The object of my invention is to produce a simple machinewhich isadapted to filter a large quantityof oil and which can be readilyarranged so as to filter oil or other matter to the extent desired. IAnother object of my invention is to provide means for easily getting atthe; filtering arts for draining the oil as it is filtered and orpermitting steam to enter the filter, so as to thin the oil and make itpass easily through the filtering medium,'and-'also to more easily reciitate the dirt and other impurities in t e i In arranging for theadmission of steam to the filtering parts I refor to use exhaust-steamfrom a tur ine which is used to drive the filter, thou h,

steam can be'admitted in other ways and t e centrifugal ortion. of themachine may be driven by 0 or means.

With these ends in view my'invention consists of certam features ofconstruction and" combinations-of parts, which will be hereinafterdescribed and claimed. f

Reference is to be had to the accompanyingdrawings, f0 a part of thisspecification, in which'simi ar indicate corresponding parts in both theviews.

Fi 1 e 1 is a vertical section of a machine,

- showing my improvements; and Fig.' 2 is a Y cros's section through oneof the filtering cones or funnels. g

The machine can be of any approved design, and I have shown it providedwith an inclosing casing 10,-having for convenience a removable to 11and mounted one suitable base 12. xtending vertically throu h the casingis a rotary shaft 13, which at t e top is bored out, as 'showna't 14, toprovide 4 an oil-receptacle, though obviously the oilreceptacle may beseparate or attached to the shaft, if desired. The construction shown ispreferred, however, and from the re- 5*,-peptacle are ports'M, throughwhich the oil passes to the interior of the filter.. The oil is figuresof reference" supplied tothe receptacle 1% from a nozzle or from anysuitable funnel or source of Supis carried .by the. shaft 13 and whichhas for convenience a removable top 17 this being held to the drum bybolts 18 or equivalent fastenings. On the bottom and top of the drum areholes 19 and 19 to permit steam to pass through the drum and lique'fythe oil thereon. Withinthe drum are a number of Within the casing 10 isthe drumifi, which partitions 20, each being shaped, preferably,

he a frustum of a cone, though the only es- 'sential thing is that theybe inclined and be oppositely arranged, as shown, to form alter hatingchambers. In the drawings Lhave shown a series of these partitions 20,20, 20 and 20. It will be seen that the'open ends of the chambers arealternatelyplaced, the smaller end being fixed to the top and bottom,respectively, of the drum 16, and, as

illustrated, the inner partition 20 is fixed to- .the top 17, the next,20*, to the bottom ofthe drum 15, and so on. Each partition is linedwith wire mesh 21, which ooes not show in Fig. 1, as it would. confusethe. drawings; but

it shows clearly in Fig. 2. Ihe object of this wire mesh is to hold thefilteringcloth 22 from contact with the wall of the partition 20 20,&c., and provide space for the 011. to trickle down the wall ofthe-partition. I re- "fer to the art 22 as a cloth butit can be anysuita' le fabric and is by preference a relatively close cloth, so thatthe oil will be forced through it; but the dirt and other matter inthe-oil will be retained'byit.

- Below the casing 10 and within the hollow base 12 is a turbine 23,which can be of an approved type and which is fast to the sha t 13. Thisis driven by steam from a pipe 24, and the exhaust rises through a pipe25 into the casing. The final exhaust passes out from the casing throughthe pipe 26. The

filtered oil flows from the casing through a pipe 2'7 to a suitable recetacle. It will be seen, of course, that the s aft 13 may be rotated byother. means without affecting the princi le of m invention and that ifthe shaft is rotate by other, means steam can be admitted to the-casing10 in any suitable 'way. I prefer the structure shown,- however, as itprovides av very simple means o1? forming the two functions of rotatingthe filter and admitting steam thereto.

- When the filter is started up and oil is admitted, the oil flowsthrough the ports 14 g that any I reached, the filter .place.

through the cloth thereof until it eventually d owing to the inclinationof flows over the top, the'said Wall, and

then it travels down the third Wall 20F,

and so on. It is apparent necessary number of partitions from one u canbe used according to circumstances. he action of the filter is progressivetha t is, whenthe oil strikes the smaller portion of a partition itwill at first go right through the portion on which it nnpinges,

but presently that art of the clothwill be come filled with irt and theoil will go through a little farther along the cloth, and so on, untilthe cloth is charged with dirt and other impurities. When this conditionis can be opened and the cloths removed From the foregoing descriptionit Will be seen that the gist of the invention lies in the arrangeme tof the inclined partitions and their filtering-cloths and the wire mesh.It

will also be understood that while I illustrate the partitions asflaring and circular they are not necessarily so, but are preferablyinclined and placed with the adjacent enes oppositely pitched. 7

Having thus full described my invention, I claim as new and desire tosecure by Letters Patentrising a casing l. A centrifugal filter, com

' etand having hav ng a steam inlet and out and is caught on the cloth22 of the inner parand new ones put in their ing the 0 drainage means atthe bottom, a rotatable drum mounted Within the casing, and a series ofconcentric flaring partitions arranged within the drum, the saidartitions being oppositely pitched and attac ed at their smaller ends tothe top and bottom portions of the rum.

2. A centrifugal filter, comprising a rotatable drum arranged to turn ona vertical axis, means for admitting steam to the drum, and a series ofconcentrically-arran ed fiaring partitions of opposite pitch hel ,withinthe drum with their smaller ends attached to the top and bottom portionsof the drum the said partitions being lined with 'a dirt-collectingmedium. t

3. A centrifugal filter, comprising, a rotaaxis, means for admittingsteam to the drum and for draining liquid from the bottom thereof, and aseries of concentrically an ranged flaring partitions attac'hed at theirsmallerends to the end portions of the drum the said partitions beingcloth-lined and hav- 0th covered with a wire screen.

4. A'centrifu al filter, comprising .a .vertical rotatable 's% and withside ports leading from t e said hollow to the sides, a .drum carried bythe shaft,-and a series of concentrically-arran ed flaring partitions ofop osite pitch secure at their smaller ends to tlie end portions of thedrum.

moms snrarrnnson aft) hollow at theup er end:

